JPH11292008A - Automatic binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic binding machine that is capable of binding an article quickly and tightly while the article is placed on a carrying conveyor or the like. SOLUTION: A pair of races 7A and 7B are supported rotatively with a machine frame 1, and a holder part 11 that holds one end of a binding cord 5 unwound from a winding drum 4 so that it can be unwound freely is provided at the race 7A on one side while a clamp part 12 that picks up the one end of the binding cord 5 projecting from the holder part 11 is provided at the other race 7B. Then, the paired races 7A and 7B are turned half in the opposite directions while the one end of the binding cord 5 is being picked up with the clamp part 12, and the holder part 11 and the clamp part 12 are moved therewith round an article W from the initial positions to a binding mechanism part 13. After the binding cord 5 wound round the article W is bound and cut, the holder part 11 and the clamp part 12 are turned reversely and returned to the original positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic binding machine for binding books and other articles accumulated in a multi-stage form with a binding string.
In particular, the present invention relates to an automatic binding machine that is applied to binding long articles.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for binding articles such as books, a binding machine as shown in FIG. 8 of Japanese Utility Model Application Laid-Open No. 2-141306 is known. This binding machine is generally composed of a crank-shaped rotating arm (lacing arm) and a table with a slit installed in its circular orbit.
The tying cord is passed through the crankshaft from behind the rotary arm so that it can be locked to a tying mechanism (knot cutting mechanism) arranged near the slit of the table. At the time of binding, the article is placed on the table, and by rotating the rotating arm in that state, the binding string can be wound around the article at the position of the slit.

On the other hand, Japanese Patent Application Laid-Open No. 8-282616 proposes a binding machine using a rotating ring to which a guide for a binding strap is fixed instead of the above-mentioned rotating arm. According to this binding machine, articles can be fed into the rotating ring from behind using a pusher or the like, bound by rotating the rotating ring, and then the bound articles can be placed on a conveyor or the like and automatically transported.

[0004]

However, in order for any of the binding machines to smoothly unwind the tying strap and wind it around the article, the unwinding side of the tying strap is guided by the crankshaft or the guide. Since it is necessary to avoid the surroundings and the crankshaft and the guide must be lengthened in proportion to the length of the article, it was impossible to bind a substantially long article.

[0005] In particular, in the binding machine disclosed in Japanese Patent Application Laid-Open No. 8-282616, articles are placed on a receiving plate while forming an escape path for a binding string on the discharge side of the article, and bound together with the receiving plate. Since the board is pulled out, a strong binding force cannot be obtained.

In this respect, in the binding machine disclosed in Japanese Utility Model Laid-Open No. 2-141306, a strong binding force can be obtained because the binding cord is directly wound around the article at the position of the slit. However, there is a problem that the method is not suitable for binding and lacks in automatic conveyance of articles. For this reason, 2-141
In the invention of No. 306, the articles are being transported using a rotary turntable instead of a fixed table so that they can be bound while automatically transporting the articles. Must protrude from the periphery of the turntable, and therefore, a mechanism for holding the article on the turntable is required, and since it is a large and special transport form, it is extremely difficult to automatically transport the article. .

The present invention has been made in view of such circumstances, and it is an object of the present invention to easily achieve automatic conveyance of articles to be bound and to transfer the articles on a conveyor or the like for conveyance. It is an object of the present invention to provide an automatic tying machine capable of performing quick and strong tying with the tying device being mounted on the tying member.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a winding mechanism for winding a binding string around an article while feeding the binding string from a winding drum, and cutting and binding the binding string at one end. An automatic tying machine comprising: a wrapping mechanism, wherein the winding mechanism includes a holder for holding one end of the tying cord so as to be able to be extended and one end of the tying cord protruding from the holder. The holder portion and the clamp portion advance in the opposite direction around the article while feeding out the binding straps with the position close to each other as an initial position, and head toward the connection mechanism section, and the connection thereof is performed. It is an object of the present invention to provide an automatic tying machine configured to be turned over and returned to an initial position after binding and cutting of a tying string by a mechanism.

According to a second aspect of the present invention, as a more preferable aspect, a winding mechanism for winding a binding string around an article while being fed out from a winding drum, and a wiring mechanism for connecting and cutting the binding string at one end. And a winding mechanism unit having a pair of orbital rings that surround the article and are reciprocally reversed in opposite directions around the article, and one of the orbital rings has one end side of a tying string. Is fixed, and a clamp for holding one end of a binding cord protruding from the holder is fixed to the other race, and the holder and the clamp are fixed to each other. With the close position as the initial position, each of the binding straps is advanced in the opposite direction while being fed out of the binding strap and heads toward the connection mechanism, and after the binding strap is connected and cut by the connection mechanism, each is reversed and returned to the initial position. Become like And it provides a dynamic binding machine.

In particular, a cam is fixed to one of the races in proximity to the holder, and a clamp fixed to the other race has an opening / closing claw that is opened and closed by the cam.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a schematic front view of an automatic binding machine according to the present invention. In FIG. 1, reference numeral 1 denotes a machine frame of an automatic binding machine. The machine frame 1 includes a base 2 and an arch-shaped fixing plate 3 fixed on the base. Reference numeral 4 denotes a winding drum in which a binding string 5 is wound in a roll shape. The winding drum 4 is rotatably mounted on a mounting portion 6 provided on the machine frame 1. 7
Reference numerals A and 7B denote ring-shaped orbits which reciprocally invert in opposite directions around articles to be bound such as books, and the orbital rings 7A and 7B are of the same shape and the same size so that the same center of rotation is horizontal. In this way, it is rotatably supported at the portion of the machine frame 1. Reference numerals 8 and 9 denote support rollers for rotatably supporting the bearing rings 7A and 7B.
Are rotatably mounted on a base 2 and a fixed plate 3 constituting the machine frame 1 and are pressed against the outer peripheral surfaces of the bearing rings 7A and 7B, respectively. Of these, the support roller 8 is a drive wheel mounted on a rotating shaft of a reversible motor 10 as a drive source provided on the base 2, and by driving the support roller 8, the orbital rings 7A and 7B can be rotated in the normal and reverse directions.

Reference numeral 11 denotes a holder fixed to the inside of one race 7A, and reference numeral 12 denotes a clamp fixed to the inside of the other race 7B, which together with the races 7A and 7B constitute a winding mechanism. . A tying cord 5 extended from the winding drum 4 is passed through the portion of the holder 11, and one end of the tying strap 5 is extended and held by the holder 11, and the tying strap 5 protruding from the holder 11 is held. 5 can be pulled out while being clamped at one end by the clamp portion 12.

In other words, the initial position in the figure in which the holder portion 11 and the clamp portion 12 holding one end of the binding cord 5 are close to each other around the article W disposed inside the bearing rings 7A and 7B. By traveling in the opposite direction toward the connection mechanism 13 located at a position facing the object from
The tying string 5 can be unwound from the winding drum 4 and wound around the article W.

The connection mechanism 13 is a well-known cutter and connection device capable of connecting and cutting the tying string 5 at one end thereof, and the connection mechanism 13 is composed of the track rings 7A and 7A.
B is mounted on the base 2 as shown in FIG. The binding string 5 is, for example, an untwisted resin string, and is formed of a plurality of tension rollers 14 and 15.
And is led to the holder 11. Here, one tension roller 14 can be moved up and down by attaching it to a telescopic rod of a cylinder 16 or the like. When the holder unit 11 or the clamp unit 12 returns to the initial position, the union string 5 is not loosened. You can pull it back. In FIG. 1, reference numeral 17 denotes a support table on which articles are placed. The support table 17 is arranged such that one side surface is close to the connection mechanism unit 13 as shown in FIG. The binding strap 5 can be joined at the corner of the article W on which it is placed.

FIG. 2 is a schematic side view of the automatic binding machine according to the present invention. As is clear from this figure, a pair of races 7A, 7B are juxtaposed in the axial direction, and are rotatably supported by individual support rollers 8, 9, respectively. In particular, the races 7A and 7B have their own reversible motor 10 as a drive source.
When the holder unit 11 and the clamp unit 12 reach the connection mechanism unit 13, the holder unit 11 and the clamp unit 12 are reversed. Here, the holder 11 and the clamp 12
On the opposite side of the fixed plate 3, the races 7 </ b> A and 7 </ b> B protrude in the axial direction, and on the protruding side thereof, a fixed plate 18 to which the above-described tension roller 15 is attached is provided. The fixing plate 18 is also formed in an arch shape so that the article W can pass therethrough.

Further, as is apparent from FIG.
Reference numeral 7 denotes a pair of conveyors 17A and 17B extending in the axial direction through the inside of the bearing rings 7A and 7B, and the conveyors 17A and 17B can convey articles W to the inside of the bearing rings 7A and 7B. In particular, the conveyors 17A and 17B are provided at intervals between the bearing ring 7B and the fixing plate 18 corresponding to the holder 11 and the clamp 12, and the holder 11 and the clamp 12 are interposed therebetween. Thus, the binding string 5 can be wound around the article W. That is, the article W carried in from one side of the conveyors 17A and 17B is stopped at the intermediate position while being placed on both the conveyors 17A and 17B, and bound by the conveyors 17A and 17B after being bound at that position. It will be carried out in the direction.

Next, FIG. 3 is an enlarged view showing a raceway partly cut away. As shown in this figure, the bearing rings 7A,
7B are guide grooves 19 each having a concave cross section on the outer periphery thereof.
Are formed in the guide grooves 19, and the support rollers 8,
9 is to be fitted. The support roller 9 on the upper side shown in FIG.
Is rotatably mounted on a bearing 21 via a bearing 21. On the other hand, the holder part 11 and the clamp part 12 are
Are attached to the inner peripheral surfaces of the bearing rings 7A and 7B.

As shown in FIG. 4, the holder portion 11 is
2, a base 25 fixed to the base 24, such as a leaf spring, and a one-way roller 27 attached to the base 24 via a swing link 26. The one-way roller 27 is shown in FIG. It rotates in only one direction (the direction of the arrow in the drawing) while being pressed against the surface of the base 24 by the action of a spring. Then, one end side of the binding cord 5 drawn out from the winding drum is passed between the base 24 and the one-way roller 27 so as to be drawn out from between the base 25. Therefore, the holder 11
According to this, it is possible to hold the tying cord 5 so as to be able to be pulled out and prevent its detachment.

On the other hand, the clamp portion 12 comprises a bracket 28 fixed to the seat plate 23 and a pair of opening / closing claws 29 attached to the bracket 28. Of these, open / close claw 2
Reference numeral 9 denotes an action of a spring 30 interposed at one end, and the other end is closed when no load is applied. A cam roller 31 is provided at one end of the opening / closing claw 29, and a cam 32 for opening and closing the opening / closing claw 29 in close proximity to the holder 11 is fixed to the raceway ring 7A on the side where the holder 11 is fixed. The cam 32 has a U-shaped cam surface 33 on the surface facing the opening / closing claw 29, and the opening / closing claw 29 can be introduced between the cam surfaces 33. When the cam roller 31 is pressed by the cam surface 33 at the time of introduction, the other end of the opening / closing claw 29 is opened, and at the time of disengagement, one end of the binding cord 5 protruding from the base 25 of the holder portion 11 while the other end is closed. The part is to be picked.

Here, in order to bind articles using the automatic binding machine configured as described above, first, as shown in FIG. 2, the article W is conveyed from one side of the conveyors 17A and 17B to an intermediate position thereof. In this state, the reversible motors 10 and 10 are operated to rotate the pair of bearing rings 7A and 7B in opposite directions by a fixed amount (１ ／ rotation). Before the races 7A and 7B rotate, the holder 11 and the clamp 12 are close to each other with the position facing the connection mechanism 13 via the article W as an initial position as shown in FIG. When 7B starts rotating in the opposite direction, the holder 11 and the clamp 12 also follow them and travel around the article W in the opposite direction.

In particular, when the holder portion 11 and the clamp portion 12 move in opposite directions, the compression of the one end of the opening / closing claw 29 by the cam 32 is cut off, and the other end side is closed while the holder portion 1 is closed.
One end of the tying cord 5 protruding from 1 is pinched.
Accordingly, the holder portion 11 and the clamp portion 12 move toward the connection mechanism portion 13 while feeding out the binding cord 5, and when approaching each other again at that portion, the reversible motors 10, 10 are stopped to stop the bearing rings 7A, 7B. When the holder 11 and the clamp 12 move toward the connection mechanism 13, the tension roller 14 is gradually raised by the operation of the cylinder 16, and acts to reduce the repetitive output of the binding cord 5.

Here, when the holder 11 and the clamp 12 reach the connection mechanism 13, the tying string 5 is wound around the article W by one turn as shown in FIG. Then, at this time, the connection mechanism 13 is operated, and the binding string 5 wound around the article W is joined and cut at one end thereof. More specifically, the binding string 5 extending from the holder 11 is joined to one end removed from the clamp 12, and then a portion connected to the holder 11 is cut by a rotating blade. The cut strap 5 is held by the holder with one end protruding from the holder 11. Further, when the binding strap 5 is joined, the binding strap 5 is brought close to the article W at the site of the wire connection mechanism 13 as is well known on the side of the clamp section 12, so that the binding strap 5 does not loosen.
Since the tying string 5 is joined at the corners, the tying can be firmly tied.

Thus, when the tying cord 5 is cut, the holder 11 and the clamp 12 are turned over to return to their initial positions. At this time, the tension roller 14 is lowered from the state shown in FIG. In addition to pulling back the binding strap 5 connected to the binding section 11 without loosening, the clamp section 12 returns to the initial position without being connected to the binding strap 5, and the opening / closing claw 29 is attached to the cam 32 facing immediately before that. Is introduced so that the side facing the holder portion 11 sandwiches the base 25. By repeating the above operation several times, the binding string 5 is wound around the article W by the number of repetitions, and the binding step is completed.

The preferred embodiment of the present invention has been described above.
The binding string is not limited to a non-twisted resin string, but a twisted resin string or a string made of another material, a band-shaped resin string called a PP band, or the like can be used. However, depending on the type of the tying string to be used, a corresponding wiring mechanism is selected. For example, in order to use a PP band, what is necessary is to adopt not the thing of a method of mechanically tying a binding string but a thing of a heat sealing method as a connection mechanism part.

The race is not limited to a perfect circle, but may be a C-shape or a semi-circle with a portion cut away. Furthermore, instead of operating the bearing rings half a turn in the opposite direction, they are formed into a fixed circular orbit, and the holder unit 11 and the clamp unit 12 are self-propelled with a motor or the like and are driven around the article W. The reciprocating reversing movement may be performed in opposite directions. In this case, only one circular orbit is sufficient, and the holder and the clamp are not limited to the above-described configuration, but may have various structures.

[0026]

As is apparent from the above description, according to the present invention, since the binding cord is wound around the article while being fed out by the backward movement of the holder and the clamp, the binding is very fast and smooth. In addition, instead of winding the tying string several times continuously, the holder and the clamp are reciprocated between the initial position and the wiring mechanism, and the tying string is joined and cut by the wiring mechanism every one turn. As a result, the winding side of the tying string can be smoothly wound without being entangled without being avoided from around the article.

Therefore, if the article is within the track between the holder and the clamp, it can be bound regardless of its length.
Moreover, since the binding cord can be directly wound by supporting the article only at the binding position with a gap, a strong binding force can be obtained.

In particular, an automatic transport line can be easily constructed using an extremely general conveyor or the like as a support for the articles.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an automatic binding machine according to the present invention.

FIG. 2 is a schematic side view of the automatic binding machine.

FIG. 3 is a partially enlarged view showing a raceway partly broken away.

FIG. 4 is a partially enlarged view showing a holder portion and a clamp portion.

FIG. 5 is a schematic diagram showing a state in which a holder and a clamp are close to each other at an initial position.

FIG. 6 is a schematic diagram showing a state in which the holder and the clamp have reached the connection mechanism;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine frame 4 Winding cylinder 5 Binding cord 7A, 7B Track ring 11 Holder part 12 Clamp part 13 Connection mechanism part 29 Opening / closing claw 32 Cam

Claims (3)

[Claims] 1. An automatic tying machine comprising: a winding mechanism for winding a binding string around an article while being fed from a winding drum; and a wiring mechanism for joining and cutting the binding strap at one end. The winding mechanism has a holder for holding one end of the binding strap so as to be able to be extended and a clamp for picking one end of the binding strap protruding from the holder. The parts advance in the opposite direction around the article while feeding out the binding straps with the position close to each other as the initial position and head toward the connection mechanism, and after the binding and cutting of the binding straps by the connection mechanism, each of the parts is turned over and then initialized. Automatic binding machine that returns to the position. 2. An automatic binding machine comprising: a winding mechanism for winding a binding string around an article while being fed from a winding drum; and a wiring mechanism for joining and cutting the binding strap at one end. The winding mechanism has a pair of races that reciprocate in the opposite direction to each other around the article, and a holder that holds one end of the binding strap so as to be able to be pulled out is fixed to one of the races. At the same time, a clamp for picking up one end of the binding strap protruding from the holder is fixed to the other raceway, and the holder and the clamp are each fed out of the binding strap with a position close to each other as an initial position. An automatic tying machine configured to advance in the opposite direction around the article while heading toward the connection mechanism, and after being connected and cut by the tying string by the connection mechanism, each of the ties is reversed to return to the initial position. 3. The cam is fixed to one of the races in proximity to the holder, and the clamp fixed to the other race has an opening and closing claw that is opened and closed by the cam. Automatic binding machine.